Abstract: The invention is an assembly of a push-pull switch and a device to selectively limit the action of the push-pull switch. The switch has a body, a plunger translatable into or from the body, and a round head on the plunger. The switch opens or closes depending on whether the plunger is extended or retracted. The device is comprised of two semi-cylindrical sleeve halves that fit together to form a complete sleeve about the head of the plunger. The sleeve is open at both ends, has two internal grooves into which the head can snugly fit, and has an external groove to accommodate a clip, tie or like mechanism for holding the sleeve halves together. Depending on which internal groove is fit over the head and on which end of the sleeve faces the body of the switch, the plunger will either be locked in an extended position or will be prevented from resting in a retracted position.